From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 418ADC4332F for ; Wed, 12 Oct 2022 15:40:20 +0000 (UTC) Received: from localhost ([::1]:41088 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oidqF-0001C3-8R for qemu-devel@archiver.kernel.org; Wed, 12 Oct 2022 11:40:19 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59252) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oidoC-0006iC-Rv for qemu-devel@nongnu.org; Wed, 12 Oct 2022 11:38:13 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:33921) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oido8-0001E7-8P for qemu-devel@nongnu.org; Wed, 12 Oct 2022 11:38:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1665589086; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=AshRl0qff47RtQHimqHVJFq8Vb6NhZReyz43xzowdD0=; b=QuvkrGWned5RoziPi00qR7VLJwDXi3R1uoMv4LY0f/gPsViRNokGndykGydikYAC2mloIR urPbYmqdy2PXk41FoBkmTVsGAAryKt4myhFFb+DxOBOF2bPjRYuqR+OtGX5yPYhPdabMF2 8NbPFv/M/HNVjlU+BQoEgNjbJFqZkmQ= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-548-7k5oZr4EM72H3My-TIP5IQ-1; Wed, 12 Oct 2022 11:38:03 -0400 X-MC-Unique: 7k5oZr4EM72H3My-TIP5IQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4E0E6811E75; Wed, 12 Oct 2022 15:38:03 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.39.192.110]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D1C77111E407; Wed, 12 Oct 2022 15:38:02 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 70A7B21E6931; Wed, 12 Oct 2022 17:38:01 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Cc: arei.gonglei@huawei.com, lvivier@redhat.com, amit@kernel.org, mst@redhat.com, pbonzini@redhat.com, berrange@redhat.com, eduardo@habkost.net, thuth@redhat.com, david@redhat.com Subject: [PATCH 2/4] backends: Improve error messages when property can no longer be set Date: Wed, 12 Oct 2022 17:37:59 +0200 Message-Id: <20221012153801.2604340-3-armbru@redhat.com> In-Reply-To: <20221012153801.2604340-1-armbru@redhat.com> References: <20221012153801.2604340-1-armbru@redhat.com> MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When you try to set virtio-rng property "filename" after the backend has been completed with user_creatable_complete(), the error message blames "insufficient permission": $ qemu-system-x86_64 -S -display none -nodefaults -monitor stdio -object rng-random,id=rng0 -device virtio-rng,id=vrng0,rng=rng0 QEMU 7.1.50 monitor - type 'help' for more information (qemu) qom-set /objects/rng0 filename /dev/random Error: Insufficient permission to perform this operation This implies it could work with "sufficient permission". It can't. Change the error message to: Error: Property 'filename' can no longer be set Same for cryptodev-vhost-user property "chardev", rng-egd property "chardev", and vhost-user-backend property "chardev". Signed-off-by: Markus Armbruster # This is the commit message #2: # fixup! backends: Improve error messages when property can no longer be set --- backends/cryptodev-vhost-user.c | 2 +- backends/rng-egd.c | 2 +- backends/rng-random.c | 2 +- backends/vhost-user.c | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/backends/cryptodev-vhost-user.c b/backends/cryptodev-vhost-user.c index 5443a59153..f9c5867e38 100644 --- a/backends/cryptodev-vhost-user.c +++ b/backends/cryptodev-vhost-user.c @@ -339,7 +339,7 @@ static void cryptodev_vhost_user_set_chardev(Object *obj, CRYPTODEV_BACKEND_VHOST_USER(obj); if (s->opened) { - error_setg(errp, QERR_PERMISSION_DENIED); + error_setg(errp, "Property 'chardev' can no longer be set"); } else { g_free(s->chr_name); s->chr_name = g_strdup(value); diff --git a/backends/rng-egd.c b/backends/rng-egd.c index 4de142b9dc..684c3cf3d6 100644 --- a/backends/rng-egd.c +++ b/backends/rng-egd.c @@ -116,7 +116,7 @@ static void rng_egd_set_chardev(Object *obj, const char *value, Error **errp) RngEgd *s = RNG_EGD(b); if (b->opened) { - error_setg(errp, QERR_PERMISSION_DENIED); + error_setg(errp, "Property 'chardev' can no longer be set"); } else { g_free(s->chr_name); s->chr_name = g_strdup(value); diff --git a/backends/rng-random.c b/backends/rng-random.c index 7add272edd..80eb5be138 100644 --- a/backends/rng-random.c +++ b/backends/rng-random.c @@ -96,7 +96,7 @@ static void rng_random_set_filename(Object *obj, const char *filename, RngRandom *s = RNG_RANDOM(obj); if (b->opened) { - error_setg(errp, QERR_PERMISSION_DENIED); + error_setg(errp, "Property 'filename' can no longer be set"); return; } diff --git a/backends/vhost-user.c b/backends/vhost-user.c index 10b39992d2..5dedb2d987 100644 --- a/backends/vhost-user.c +++ b/backends/vhost-user.c @@ -141,7 +141,7 @@ static void set_chardev(Object *obj, const char *value, Error **errp) Chardev *chr; if (b->completed) { - error_setg(errp, QERR_PERMISSION_DENIED); + error_setg(errp, "Property 'chardev' can no longer be set"); return; } -- 2.37.2